So i have found this bug when you put redstone on pistons and power redstone, redstone will be destroyed more in the video.
MC-98592
Bug Redstone, Pistons
Resolved
Duplicate
0
Marcel Kubašek
(Unassigned)
Unconfirmed
Minecraft 1.9
Retrieved
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-93631. You can find or add further information on that report.
If you haven't, please search before reporting any bugs, as it's likely that one exists already.